Vi THE NAUTILUS 
Prosopeas argeutea Henderson, n. sp. (PI. II, fig. 10).......... . Me 
Pieronoius Carpenteri Dall; n: spies. -...:...-.. ocemeeeee .. 138 
Publications received. .: .. +. -\..0< saameeee- - 10, 33, 47, 60, 72, 81, 93, 108 
Pupea Hopp Moller... ..:..0.5. Sees: > 1+. <¢¢c8 gee 104 
Pupa (Neartula) superioris Pils. n.sp.............. 200k os nn 
Bupa CPupila) sonorana Sterki, Heme. -......:. i. ceeeeoeeeee 128 
Pupa (Pupilla) sonorana var. tenella Sterki, n. var....... vs oh gba ite 
Up He DIEM . 2... ose a oe OS. Oe oer 127 
Pyramidula Cockerelli, Pils... speee..............2-35e ee 85 
Pyramidula striatella catskillensis Pils,, n. var...............- 86 
Pyramidula strigosa (young)... Fee... ens note eee 24 
Quarternary fossil shells, Long Begen. Cal .......-.....-2aeeee ff 
Ravenia Hollandi Henderson, n. sp. (figured).................- 25 
Roper, Edward W., In Memoriamige......<. o.2...%2+~ cee eeeee 129 
San Diego, California, as a collecting ground.................: 88 
Septifer bifarcatus Conrad, note/@am....-. 2... .2.teren see 69 
Septifer bifurcatus Rve. and Mytilus bifurcatus Conrad, an in- 
terrogation in regard to .-<2ie...:.:...... see 67 
Shallcross, John (Obituary) ........ Sic 41.3356 95 
Shell collecting at Mt. Desert, Mame... ......5:.~<.. 0. seeeeeeeaee 73 
Shells of Redding, Shasta Countyaqw@al..........-.:9:- 52s 59 
Sitala carinifera Stol. var. marangensis n. var., Aldrich (PI I, 
1) EA tA e en 2 
Spherium lilgcashense Baker, nwepe...... 2.22.22. ene 65 
Spixia Fals,and Van n. subg. Oame......... 2025. oem eee a7 
Snecimea retusa tmagister Pils, Magee... .<....... .. oes eee eee 103 
Terebra tesaue. Dall, n. sp... ac. Geert <=... 00h one oe 45 
Trochomorpha Dohertyi Aldrich, n. sp (PI. 1, figs 7. 8)....... 4 
Unio complanatus Sol. at New Philadelphia, Ohio ............ 24 
finropcolleching...-...... 2.5. o2 Mey 0s 60 ce 8 
Unio cvlindricus Say, var. strigillatus Wright, n. var....-..... 6 
Unio therinegt Wright, n. sp... dibae.s<-..:... koe eee 93 
mo strodeanus Wricht, n. sp. gee ---...: << epee 3 
Uimiowallosus Wricht, n- Sp.<0: See, 63+... .. cake eee eeaes 8 
Unionidae, migration of.-. 2p +... - ote a eee 139 
Unionide, some observations on the genital organs with refer- 
ence to classification. . .-..-2e-. - weve ore el LOD 
Urosalpinx cinereus in San Francisco Bay.............-.-----+ 112 
Vallonis ontme Pacitiic. Coast... dames <- 0. 5s < ong eee eee 60, 71 
Vitrea carolinensis, Cockerel)...0e9.--..-....... 2.24. =...265nnn 
Vitiea indentata var. umbilicata Simgley...........-----.-.:2=8 120 
Vitrea, notes on the indentata group of.............---..s0--9 120 
Vitrea Rhoadsi Pils., o, sp. ... <-geeteve et 4s «9.2 <s oh ol 101 
Vitrea sculptilisBid......:... 0.2) .Geeeebem ss ea > <a +o a ee 120 
Zonitoides Randolphi Pils. and Clapp, n. sp.....-....5. seers 87 
